Footwear protuberance



FIG. 1 is a right side elevational view of a footwear protuberance showing our new design. The footwear shown in broken lines is for illustrative purposes only and forms no part of the claimed design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a front elevational view thereof; and,

FIG. 7 is a front top isometric view thereof. 

The ornamental design for a footwear protuberance, as shown and described. 